Nut-lock.



No. 788,324. PATENTED APR.,\25,-1905.

w. L. moanow.

NUT LOCK APPLIOATIOH FILED EAR. 17, 1904.

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//v VENTOH 11/ Z 741W A 77'0H/VE) Patented April 25, 1905.

PATENT OEEIcE.

IVILLIAM L. MORROW, OF STOCKTON, CALIFORNIA.

NUT-LOCK- SPECIFICATION forming part of Letters Patent No. 788,324, dated April 25, 1905.

Application filed March 17, 1904. Serial No- 198,546.

To a. whom it may concern.-

Be it known that I, WILLIAM L. MORROW, a citizen of the United States, residing at Stockton, in the county of San Joaquin and State of California, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification.

This invention relates to improvements in nut-locks, the object of the invention being to provide a cheap and simple form of nut-lock by which the nut shall be effectually prevented from unscrewing from the bolt.

In the accompanying drawings, Figure 1 is a plan view of a bolt having the nut and jamnut thereon constructed in accordance with the invention. Fig. 2 is a longitudinal section of the same. Fig. 3 is an end view of the same. Fig. 4 is an end view, the jam-nut having been removed. Fig. 5 is a perspective view of the main nut detached. Fig. 6 is a perspective view of the jam-nut detached.

Fig. 7 is a similar view of a modified form of jam-nut. Fig. 8 is a perspective view of the key detached.

Referring to the drawings, 1 represents a bolt, 2 the main nut thereon, and 3 a jam or locking nut thereon. The bolt has in its threaded portion a longitudinal groove 4, in which is a key 5. The outer face of the main nut 2 has a circular depressed portion 6, and in said depressed portion are again sunk a number of radial sockets or grooves 7, the sides of each groove being parallel. After the main nut has been screwed on into place a key 5 is placed in the longitudinal groove on the outside of the nut, the upturned head 9 of the key being pushed into one of the radial sockets which has been brought into the same radial plane as the longitudinal groove. A jamnut 3 is now screwed onto the end of the bolt, the inner portion of said jam-nut entering the depressed circular portion of the main nut. 1n the modification of the jam-nut shown in Fig. 7 said jam-nut has an inner circular portion which fits closely within the circular depression 6 in the main nut, entirely covering the same. In the modification of the jam-nut tween abutments 12.

been screwed on so that one of these grooves is in the plane of the key the end of the key is turned up and forced into said groove 11. By this construction the following advantages are obtained: The key is put in place after the nut has been screwed on, which is of great convenience, the inner portion of the key between the two nuts is entirely covered from the weather, the key is absolutely prevented from slipping longitudinally outward in the groove, whichwould bring its head out of the socket in the main nut, and the two nuts are both absolutely locked in place against any outward movement. Not only are they looked against outward movement, but also against creeping or inward movement, thus rendering the nut valuable on shafting and eccentrics where a definite amount of play is desirable.

I claim 1. The combination of a bolt having a longitudinal groove in its threaded portion, a

main nut having a series of radial key-sockets, a key in said groove with a head in one of said sockets, a jam-nut engaged and locked by the outer end of said key, and a cover inclosing the outer ends of said key-sockets, as set forth. I

2. The combination of a bolt having a longitudinal groove in its threaded portion, a main nut having a series of radial key-sockets, a key in said groove with a head in one of said sockets, a jam-nut engaged and locked by the outer end of said key, and a cover carried by said main nut and inclosing the outer ends of said key-sockets, as set forth.

3. The combination of a bolt having a longitudinal groove in its threaded portion, a main nut having a series of radial key-sockets, a key in said groove with a head in one of said sockets, a jam-nut engaged and locked by the outer end of said key, and an annular flan ge extending from said main nut over the outer ends of said key-sockets, as set forth.

In witness whereof I have hereunto set my hand in the presence of two subscribing witnesses.

WILLIAM L. MORROW. Witnesses:

FRANoIs M. WRIGHT, BESSIE GORFINKEL. 

